'Stranger Things'
After a three-year hiatus, this beloved series still delivers plenty of jolts, including a terrifying opening scene that marks the return of Matthew Modine's evil doctor. (And, yes, Hopper is back, too!) But "Stranger" continues to be at its best when it takes a break from monster hunting to reflect on such real teenage horrors as first crushes and high school bullies. Eleven's (Millie Bobby Brown) troubles adjusting to a new school take more than a page from "Carrie." Those with high pop-culture IQs continue to get extra treats, like the reference to the 1980s flop "Misfits of Science" starring a pre-"Friends" Courteney Cox. Time to get your geek back on. Friday, Netflix
'Emergency'
